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Finding the Fourth Proportional to 99,668,230.80, 149,530,339.80 and 48,551,917.20

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Solution

The fourth proportional to 99,668,230.80, 149,530,339.80 and 48,551,917.20 is: 72,841,512.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,668,230.80 : 149,530,339.80 = 48,551,917.20 : x
  2. Step 2: Convert to fraction form
    99,668,230.80/149,530,339.80 = 48,551,917.20/x
  3. Step 3: Cross multiply
    99,668,230.80x = 149,530,339.80 × 48,551,917.20
  4. Step 4: Simplify right side
    99,668,230.80x = 7,259,984,676,857,466
  5. Step 5: Solve for x
    x = 7,259,984,676,857,466/99,668,230.80
  6. Step 6: Final answer
    x = 72,841,512.47

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.